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2 Sheets-Sheet 1..

(No Model.)

J. WELSH.

LUBRIOATOR FOR DRILLING MACHINES. No. 365,419.

Patented June 28, 188-7.

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2 Sh e ets-Sheet 2.

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" I J. WELSH.

LUBRIGA'TOR FOR DRILLING MACHINES.

No. 365,419. Patented June 28, 1887.

N. PETERS. Fholol lhogmphar, Waxhingion. D. [2.

UNITED STATES PATENT OFFICE.

JAMES VVELSH, OF NEW YORK, N. Y.

LUBRlCATOR F OR Dmruneavmomnss.

SPECIFICATION formingpart of Letters Patent No. 365,419, dated June 28, 1887.

Application filed October 14, 1886. Serial No. 216,208. (No model.)

To aZ Z whom it may concern:

Be it known that I,.JAMEs \VELsH, a citizen of the United States, and a resident of the city,

county, and Stateof New York,have invented a new and useful Automatic Lubricator or Oiler for Drilling and Similar Machinery, of

furnishing the lubricant just when and only.

when needed. These objects I attain by the apparatus lllustrated by side and fr0nt 'views,respectlvely numbered Figures 1 and 2, wherein llke letters of referenceindicate corresponding parts throughoutthe views. Similar enlarged views of the parts below the middle of the apparatus are shown in Figs. 3 and 4, while Fig. 5 shows 011 same scale a plan of the means for supplylng the lubricant to the drill, of whatever s1ze.- Fig. 6 is a plan. of the surface of a table, showing surrounding ledge and sloping grooves converging to a cental aperture.

The supporting-frame will of course vary with the different makes of machines; but its general relative shape and position are indicated in the different views.

p Lis the reservoir for the lubricant, madein any shape to suit fancy or a particular posistruction allows the filling of the reservoir.

through the upward extension of the pipe. Toward the lower end of this pipe, and a short distance from the shank of the drill, is a double lever or elbow stopcock, Lwith an adjustable screw, 1), regulating the flow of the lubricant, as much or little may be required, by pressure against the back arm of the lever. This lever stop-cock is turned on and off automatically by the feed-regulator as the drill begins and to the shank of the drill O, is a movable piece of pipe or tubing, 0, having a grooved end fit ting any sized shank,and kept pressed against such shank by a spiral spring, d, the extent of its movability being controlled by the slot 6 and pin or screw f, working therein. The chuck B on the end of the drillshaft, being always larger than the shaft or the shank of the drill, forms a collar, and above this collar and around the shaft is a suitable place to put the brace J, running from the movable band around the shaft in any convenient curve to the supply-pipe, and serving to raise and lower the reservoir and supply-pipe at proper periods.

The automatic feed regulator, spoken of above and adjustable to the particular thickness of any work in hand,consists of a rod, E, parallel with the drill-shaft Aand suitably located at one side out of the way, kept in place and allowed motion upward and downward by guides, as F and G. The top of the rod is bent to form a 'hook, g, which catches, as it falls, the pawl or dog H,working on the ratchet-wheel, regulating the feed.

The pawl His found in allself-feeding drilling-machines, and is variously mounted by different manufacturers, generally on an arm or elbow attached to an eccentric on the drill which gives the movement tothe pawl necessary to work the adjacent ratchet-wheel. Its mounting and location are immaterial, as

my apparatus can be adapted easily to any situation by any skilled 1nechanic.- This pawl .H is provided with a pin, h, coming under standing on the center. This lever and spring hold up the rod, E when raised, so that the hook g is above the pin 71, allowing the pawl H to work the feed, and when the lever B has passed the apex of the reverse-spring Z allows the rod to drop and the hook to catch up the pawl from its work. The rod E is connected with the front arm of the lever stop-cock I by a small chain, m, which can be lengthened or shortened by means of a set screw, n, as the thickness of the work in hand varies. This chain serves to shut off the supply of lubricant when a hole is drilled,or just before, by pulling up the lever of the stop-cock, while the drill continues to work until the lever It has passed and is no longer held by the spring I, when the hook g operates on the pawl H, as described, allowing the drill to run on without boring farther. At the bottom of the rod E is a movable elbow, o, regulated by a setscrew, 1), to press on the lever of the stopcock 1 when the rod is thrown down, which opens the valve and turns on the feed.

The rod E is supported by the lever R, which bears against the lower side of the angle in the spring I. As the drillworks down, the drill-shaft A gradually lowers, and at the same time and to the same extent therewith the reservoir L and supplypipe K. Then the lowering has reached the limit-and taken up the slack of the chain at, which has been previously set or adjusted to the thickness of the particular work in hand, the lever stopcock I is first shut off thereby and the j supply of lubricant stopped, and then the continued downward drag of the weight of reservoir and supply-pipe mentioned draws the rod E down, so that the lever R is pulled upward past the apex of the angle of the V- shaped spring, whereupon the feed-pawl H is lifted in the fall by the hook g from its work, and the drill runs on without boring farther.

The quantity of lubricant supplied to the drill is to be regulated, as required, by the'setscrew 11, acting upon the short arm of the lever stop cock to open or close the orifice of the cock.

In getting ready to bore a new hole,the shaft A and eonnecting-reservoir L, supply-pipe K, and attachments are raised sufficiently to introduce the new piece of work, and as they are raised the elbow 0 strikes against the long arm of the lever stopcock I, and thereby turns on the supply of lubricant. At the same time the rod E is thrown up and the hook g lifted from the pin 71, which allows the pawl H to resume its work.

The lever B may also be used to ringasmall bell,\V, placed just above on the rod E, and adjustable by a set-screw, as shown, if preferred, so that when the rod E falls, after the lever It has passed the center of the spring Z, it shall strike and sound the bell, thus notifying the operator audibly that the work is done.

To adapt the apparatus to hand-drills whleh are not self-feeding, the regulating-rod E and its attachments are omitted, and the reservoir L and supply-pipe K,connected with the dr llshaft A by the brace J, which, together w th the self-adjusting means described for feedlng the lubricant, and shown particularly in Fig.

5 and corresponding views, constitute an effective and useful apparatus.

The table S, upon which the work in hand rests, has a flat surface with an upward projecting flange or band, 0, running around it, forming a holder for the wooden cushions used in drilling,and also catching surplus lubricant, which runs in suitable grooves provided 111 the surface and converging to a central hole into the holder 1, having in the bottom acock, Q, by which the lubricant can be drawn off and used again. In the top or bottom of tlns holder one or more filters may be placed advantageously. I

Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. An automatic lubricator for drilling-machines, consisting of a movable reservoir with supply-pipe reaching the drill and connected with the drill-shaft, in combination with an upright movable rod and its described connections, whereby the supply of lubricant may be turned on and off and the feed of the drill regulated, in the manner and for the purposes substantially as specified.

2. The reservoir L and supply-pipe K, with automaticallyadjustable mouth 0, said supply-pipe moving in guides M N, and connected by brace J with drill-shaft A, together with the upright rod E, moving in guides F G, said rod supported in position by lever R,acting against angular spring Z, and provided with hook g at top and elbow 0 at bottom,

respectively, acting on pawl-pin h and long arm of lever stop-cock I, itself regulated by set-screw I), acting on its short arm, said rod E and long arm of lever stop-cock I connected by adjustable chain at and set-screw a, all combined in the manner and for the purposes substantially as specified.

3. The reservoir L and supplypipe K, with automatically-adjustable mouth 0, said supply-pipe moving in guides M N, and connected by brace J with drill-shaft A, all combined in the manner and for the purposes substantially as specified.

4. The bell \V on adjustable arm 1', in combination with the lever B, operating in the manner and for the purpose substantially as specified.

5. The work-table S, provided with centrally-converging grooves and a side rim, in combination with a removable eup,l., and cook Q, substantially as specified.

J AMES VELSI-I.

\Vitnesses:

Gno. WHITFIELD BROWN, J r., FRANK H. HYATT.

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